Pearson Algebra 2 Common Core, 2011
PA
Pearson Algebra 2 Common Core, 2011 View details
Get Ready!
Continue to next subchapter

Exercise 13 Page 1

To add or subtract fractions, they need to have the same denominator.

-3 13

Before we can evaluate a sum or difference involving mixed numbers, the mixed numbers must first be rewritten as fractions.

a bc a* c+b/c Simplify
-5 23 -(5* 3+2/3) -17/3
-2 13 -(2* 3+1/3) -7/3
When adding or subtracting fractions, they should have the same denominator. We can see that this is the case. -17/3 - (-7/3) Now, let's perform the subtraction.
-17/3-(-7/3)
-17/3+7/3
-17/3+7/3
-17+7/3
-10/3
-10/3
â–Ľ
Write fraction as a mixed number
- 9+1/3
- (9/3 + 1/3)
-(3+1/3)
-3 13